D=2; DD=4;

P=2^5/2; PP=32;

A=2^1/2; AA=2;

R=1; RR=1;

T=1/2^1/2; TT=1/2;

S=2; SS=4;

TU=2^1/2; TUTU=2;

RT=1-1/2^1/2; RTRT=1.5-2^1/2;

DT=2-1/2^1/2; DTDT=4.5-2*2^1/2;

RTU=1-2^1/2; RTURTU=3-2*2^1/2;

DTU=2-2^1/2; DTUDTU=6-4*2^1/2;